A:Let's go to play football B:Sorry ,I'm ( ) a math problem.A working for B working on C work onC work on D worked out

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A:Let's go to play football B:Sorry ,I'm ( ) a math problem.A working for B working on C work onC work on D worked out

A:Let's go to play football B:Sorry ,I'm ( ) a math problem.A working for B working on C work onC work on D worked out
A:Let's go to play football B:Sorry ,I'm ( ) a math problem.A working for B working on C work on
C work on D worked out

A:Let's go to play football B:Sorry ,I'm ( ) a math problem.A working for B working on C work onC work on D worked out
a lecture.4.They like having s- looks upset.What happened toC history science talking him useable 1.C 2.C 3.head 4.

B

B

B working on 从事 在做。。。工作的意思
work for为。。。效劳的意思
您的支持就是我继续前行及帮助别人的动力 愿您与我一起传播『 爱心 』之种
望采纳↖(^ω^)↗

B
首先肯定是进行时
work on从事于~~的意思,就正在做……